don knapp is in napa. >> reporter: napa residents have been warned about the flooding. especially those living close to streams and the river. now they're bracing for the night. others are still working at it. crews were working into the night to remove about 3 dozen cottages mounted on mobile home frames from the river point resort. the rising river cut short vacations for guests staying in about 30 of the timeshare cottages that are threatened with a possibility of flooding. so far the napa river remains within its banks. it's expected to flood tomorrow around noon. folks aren't taking any chances. city trucks have delivered 50 tons of sand to this lot at first street and freeway drive. folks were filling bags as quickly as the sand came in. nearly 2000 bags were loaded up. >> situation is that i live on a creek. we had a big rain thursday night and the water came up to almost the top of the remaintaining wall. so we decided sandbags were a good idea. >> reporter: are you afraid the water might come over the wall? >> absolutely. >> reporter: the possibilities of flood